mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 13:55:32 +00:00
cxl: Fix NULL pointer dereference on kernel contexts with no AFU interrupts
If a kernel context is initialised and does not have any AFU interrupts allocated it will cause a NULL pointer dereference when the context is detached since the irq_names list will not have been initialised. Move the initialisation of the irq_names list into the cxl_context_init routine so that it will be valid for the entire lifetime of the context and will not cause a NULL pointer dereference. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
parent
2a4f667aad
commit
f5c9df9a44
2 changed files with 2 additions and 3 deletions
|
@ -67,6 +67,8 @@ int cxl_context_init(struct cxl_context *ctx, struct cxl_afu *afu, bool master,
|
|||
ctx->pending_fault = false;
|
||||
ctx->pending_afu_err = false;
|
||||
|
||||
INIT_LIST_HEAD(&ctx->irq_names);
|
||||
|
||||
/*
|
||||
* When we have to destroy all contexts in cxl_context_detach_all() we
|
||||
* end up with afu_release_irqs() called from inside a
|
||||
|
|
|
@ -260,9 +260,6 @@ int afu_allocate_irqs(struct cxl_context *ctx, u32 count)
|
|||
else
|
||||
alloc_count = count + 1;
|
||||
|
||||
/* Initialize the list head to hold irq names */
|
||||
INIT_LIST_HEAD(&ctx->irq_names);
|
||||
|
||||
if ((rc = cxl_ops->alloc_irq_ranges(&ctx->irqs, ctx->afu->adapter,
|
||||
alloc_count)))
|
||||
return rc;
|
||||
|
|
Loading…
Reference in a new issue